This forum is for Audacity 2.x.x on Mac OS X 10.4 and later.Please state which version of OS X you are using, the exact three-section version of Audacity from Audacity > About Audacity and whether you obtained the .dmg installer or the zip.

Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.

Connecting this device directly to speakers with audio cable I can listen any cassette contents.But If I connect the device to a Mac under OS X 10.11.6 and Audacity 2.0.3 with an USB cable and selecting "USB PnP Audio device" under Audacity and System preferences as sound input device, the choice is not accepted :"Error while opening the sound devicePlease check the input device settings and the project sample rate"Sample rate is 44100.If I connect the device to the Mac with an audio cable, keeping the USB cable to supply power to the cassette capture,and record under Audacity, there is non audio signal detected, but there is a signal under System preferences